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Engine Parts & Tuning Hardware
Unleash Your Engine's Power: Performance Parts & Accessories
At Optimiz Access, we offer a vast lineup of engine performance parts and accessories to boost the output of your sports vehicle or premium automobile. Optimize your engine for extreme performance and enjoy an exhilarating driving experience on both road and track.
Key benefits of engine tuning: substantial horsepower and torque gains for rapid acceleration, sharper throttle response, enhanced mechanical reliability using high-strength components, and tailored custom tuning suited to all engines.
Essential Products to Maximize Engine Performance
Discover all our precision-engineered components designed to increase efficiency and durability in your engine block:
- Cold Air Intakes & Air Filtration – Performance sports filters and carbon intake systems for maximum air filling.
- Intercoolers & Charge Coolers – Efficient intake air cooling to sustain consistent power output under heavy loads.
- Forged Pistons & Connecting Rods – Heavy-duty internal components built to withstand extreme temperatures and boost pressures.
- Turbos & Superchargers – Forced induction upgrades delivering significant power increases.
- Ignition & Servicing – Competition spark plugs, high-output ignition coils, and high-performance oil filters.
Industry-Leading Benchmark Brands
We stock top tuning and motorsport manufacturers: Wagner Tuning, Forge Motorsport, Magnecor, Green Filter, BMC Filter, NGK, Vibra Technics, and Powerflex. We also supply OEM factory parts to ensure meticulous engine maintenance.
Why you should Choose Optimiz Access for Your Engine Upgrades
Since 2010, Optimiz Access has specialized in selecting top-tier engine components for the custom upgrading and maintenance of sports vehicles. Located in northern France (Hauts-de-France) — near Lille, Valenciennes, Cambrai, Arras, Seclin, Douai, and Saint-Quentin —, our expert technicians guide your hardware selection and provide professional installation in our workshop. We ensure strict quality control along with fast worldwide shipping.
Unleash Your Engine's Full Potential Today
Give your car the raw power and sharp response it deserves. Trust the expertise of Optimiz Access, select your engine performance parts today, and benefit from our fast dispatch.
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Active filters
Vis M6-16 de support d’arrêt de gaine Twingo R2
€0.91Price
Sur commande ou en cours de réappro
€571.27
Price
Sur commande ou en cours de réappro
€571.27
Price
Raccord rapide Staubli Réservoir Souple Twingo R1 et R2
€571.27Price
Sur commande ou en cours de réappro
€16.00
Price
Sur commande ou en cours de réappro
€16.00
Price
Trompette / event pour boa (gaine) admission d'air diametre 76mm
€16.00Price
Épingle d’arrêt câble d'accélérateur Twingo R2
€3.42Price
Sur commande ou en cours de réappro
€72.00
Price
Sur commande ou en cours de réappro
€72.00
Price
Genuine Renault Coolant Reservoir (expansion tank) for Megane 3 RS. Ensure the proper functioning of your cooling system with this authentic part.
Also discover our compatible reservoir cap for a complete replacement.
€72.00Price
Sur commande ou en cours de réappro
€417.56
€695.94
Regular price
-40% off
Price
Sur commande ou en cours de réappro
€417.56
€695.94
Regular price
-40% off
Price
Do you own a Renault Clio 4 RS and refuse to compromise on your engine's performance? This Throttle Body , manufacturer reference 161207645R , is a genuine RENAULT original part . It is the key element for ensuring precise and rapid airflow management and maintaining the legendary responsiveness of your sports vehicle. Do not...
€417.56€695.94Regular price-40% offPrice
Sur commande ou en cours de réappro
€569.18
Price
Sur commande ou en cours de réappro
€569.18
Price
Looking to regain the responsiveness and original performance of your Renault Clio 2 RS Phase 1 , Clio 2 Group N , or Clio 2 X65 Cup ? This remanufactured 60mm mechanical throttle body is designed for direct, bolt-on replacement of your original equipment. Essential for optimal air intake and to prevent any power loss, don't let a worn throttle body hinder the...
€569.18Price
Sur commande ou en cours de réappro
€110.82
Price
Sur commande ou en cours de réappro
€110.82
Price
Genuine Renault Fuel Pressure Regulator for Megane 3 RS and Megane N4. Ensure optimal fuel supply with this high-quality regulator.
Don't forget the retaining clip for secure installation.
€110.82Price
Sur commande ou en cours de réappro
€19.87
Price
Sur commande ou en cours de réappro
€19.87
Price
Tuyau nitrile GOODRIDGE DASH 6 (le m)
Le...
€19.87Price
Genuine Renault Fuel Supply Pipe for Clio 4 RS. Ensure optimal fuel supply with this high-quality rigid pipe.
€73.75Price
Do not risk an unexpected coolant leak inside your cabin, a catastrophic engine overheat on track, or a sudden loss of pressure within your heating system. The premium heater matrix radiator inlet hose for the Renault Twingo 2 RS is the essential factory-specified conduit...
€17.65Price
Tuyau alimention essence Clio 3 RS
Tuyau arrivée à la rampe
€219.88Price
Do not let a stock hose baked by time ruin your sports car's engine. This FLEXEO silicone coolant hose kit is the ultimate solution to replace the porous rubber components on your Renault Clio 3 RS . Specifically engineered to withstand the extreme thermal demands of the 197 bhp and 203 bhp naturally aspirated engines (Clio 3 RS Phase 1, Phase 2, Cup, F1...
€313.75Price
Sur commande ou en cours de réappro
€22.00
Price
Sur commande ou en cours de réappro
€22.00
Price
Protect your vintage or classic vehicle's engine with Motul INUGEL CLASSIC coolant , a premium 5-liter product. Specifically formulated for older vehicle cooling systems, it prevents corrosion , overheating , and premature wear . Don't let unsuitable fluid damage your engine.
€22.00Price
Pédale (avec capteur) Clio 3 RS
Attention 2 types de connecteurs existent, merci de controler la compatibilité avec votre véhicule
€214.14Price
Renault Water Inlet Pipe (Clio 3 RS, Megane 2/3 RS, etc.) (Original)
Original Renault water inlet pipe in the cylinder block (water fitting), compatible with Clio 3 RS, Clio R3, Clio 3 X85 Cup, Megane 2 RS, Megane 3 RS, Megane N4. Ensures optimal coolant circulation. Discover our compatible gaskets and water tubes at the bottom of the page.
€32.10Price
Kit goujons et écrous fixation bobines pour Clio 3 RS Megane 2 RS et Megane 3 RS comprenant 4 goujons et 4 écrous le tout en inox.
Le filetage présent sur le couvre culasse peut être endommagé suite à la répétition du montage/démontage des bobines, nous vous proposons de remplacer les vis par un système de goujons et écrous. Ce montage permet de laisser en place les goujons...
€8.50Price
Sur commande ou en cours de réappro
€174.97
Price
Sur commande ou en cours de réappro
€174.97
Price
Original RENAULT Water/Oil Cooler for Clio 2 X65 Cup & Clio 3 RS
Do not risk engine overheating and loss of performance . This original RENAULT water/oil heat exchanger is the vital component for maintaining optimal <span...
€174.97Price
Relais de courant
Nous contacter pour s'assurer de la compatibilité avec votre véhicule.
€38.09Price
Sur commande ou en cours de réappro
€289.00
Price
Sur commande ou en cours de réappro
€289.00
Price
Do not take the risk of breakdown anymore! The reinforced silicone water hose kit for Renault Mégane 3 RS is the essential upgrade for your engine's reliability . Advantageously replacing the original rubber hoses, which are often prone to cracking or swelling under heavy use, these hoses are designed to...
€289.00Price
Sur commande ou en cours de réappro
€51.07
Price
Sur commande ou en cours de réappro
€51.07
Price
The original Renault black water temperature sensor is an essential part to ensure precise engine temperature control for your Renault Clio 3 RS , Renault Clio 3 X85 Cup , Renault Megane 3 RS , and Renault Megane N4 . It guarantees reliable information to optimize performance and prevent overheating. We ship...
€51.07Price
Sur commande ou en cours de réappro
€107.33
Price
Sur commande ou en cours de réappro
€107.33
Price
Tuyau entrée sortie radiateur de chauffage Megane 2 RS
€107.33Price
Relais resistance 35/15A
Référence: 8200337665 remplace les ref : 8200900374 et 8200351489
€35.54Price
Embout porte buse 10/24 Ø8 Clio 4 X98 R3T
Référence: 8201543414
€27.89Price
Filtre système arrosage Clio 4 X98 R3T
Référence: 8201557624
€13.33Price
Sur commande ou en cours de réappro
€12.96
Price
Sur commande ou en cours de réappro
€12.96
Price
Manchon réduction femelle/femelle Ø6/Ø8 Clio 4 X98 R3T
Référence: 8201489633
€12.96Price
Manchon porte buse 10/24F Ø8 Clio 4 X98 R3T
Référence: 8201543358
€25.49Price
Ensemble fixation hélice GMV Clio 2 RS et Gr N
€8.28Price
Tube HP Ø8 - 3m Clio X98 R3T et Cup
Référence: 8201489629
€15.53Price
Sur commande ou en cours de réappro
€122.15
Price
Sur commande ou en cours de réappro
€122.15
Price
Faisceau alimentation pompe Clio 4 X98 R3T et cup
8201489635
€122.15Price
Bague antidemarrage Clio 2 RS y compris Gr N
€214.78Price